Rubber composition.



Unrn s r s rarnrrr ora ion.

GEORGE o/moirsn, or nus MOINES, Iowa.

RUBBER CDill 1T1OSI'JIION'.

Specification of Letters Patent.

4 No Drawing. Application filed October so, 1915, Seria1 No. 58,781.Renewed February 25, 1918. Serial No.219,114.

To all whom it may concern. Y

:l 3e it known that-I, Gnonen 0. Mouse, a c1t1zen of the United States,residing at Des Moines, in the county of, Polk andState of Iowa, haveinvented certain new and useful Improvements in Rubber Compositions, of

I which the following is a specification.

My invention relates to an improved composition of materials formingwhat may be.

termed a rubber composition orv'substitute, the object being theprovision of a composition of, this nature or character which willprovide. a perfect substitute for rubber, particularly in its uses forautomobile tires, door mats, stairpads, floor coverings,

. Weather strips, packl'ngs, washers, and in fact generally for servicein most situations Where rubber'would be desirable and useful.

Another object of my invention is the provision of a composition of thecharacter and for the purposes stated which will possess the elasticityor resiliency of rubber, but which can be manufactured at a much lowercost, and prove more durable and lasting as well as more eificientthanthe pure rub-" ton ground or cut into small ieces; 20 partsasbestos; 60 per cent. of, cru e pure rubber;

10 parts gum acacia; 10 parts gum tragecanth; and 10 parts oil ofeucalyptus. This composition of materials is. placed in large cylinders,such as are used for preparing rubber for automobile tires and subjectedto heat and thoroughl mixed to cause the cot-' ton, asbestos, rubber,gum acacia, gum

tragaca-nth and oil of eucalyptus to comingle and form a mass or batch."This mass or batch, after being treated in the manner Patented s. re,1918. I

stated-is rolled into sheets of the necessary and desired thickness toform tires, mats,

floor coverings or any other articles for a which it would proveserviceable; p o

It will be understood that the composition provides a material whichwill be hlghly efficient either in making the complete tire or the outercovering for the tire,

and that such a composition-can be pro-- duced atZabout one-half thecost of the .usual rubber tires, but will last many times. longer thanthe rubber tire, and further that the elasticity is retained, thematerial will resist puncture much better than the rubber,

will not become highly heated inthe same manner asr'ubber, and generallyfrom every point of View, will prove a more desirable article than thepure rubber product."

I have found from experience that the 'roportion stated gives excellentresults,

ut would have it understood that the proportion may be changed if foundnecessary and desirable, without departing from the see e of myinvention.

Y will also be understood that the composition can be used forpractically all purposes where rubber is now doing service,

and will prove a more eflicient,-desirable and practical article thenrubber.

I claim The herein described composition for the purpose. described,comprising cotton, powdered asbestos, 'crude rubber, gum acacia,

guru traigacanth, and oil of eucalyptus, compounds in the manner andproportions stated. fn In testimony whereof. I afiix my slgnatur'e inpresence 0t two witnesses. v

' GEORGE O. MORSE,

Witnesses:

H. V, Sr'enn, MARY A. Swarm.

